1998 Nov 18
2
Philips Semiconductors
Product specification
FM/IF amplifier/demodulator circuit
TDA1576T
FEATURES
•
Fully balanced 4-stage limiting IF amplifier
•
Symmetrical quadrature demodulator
•
Field strength indication output for 1 mA ammeter
•
Detune detector for side response and noise attenuation
•
Detune voltage output
•
Internal muting circuit
•
0
°
and 180
°
AF output signals
•
Reference voltage output
•
Electronic smoothing of the supply voltage.
GENERAL DESCRIPTION
The TDA1576T is a monolithic integrated FM/IF amplifier
circuit for use in mono and stereo FM-receivers of car
radios or home sets.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage (pin 1)
7.5
8.5
15
V
I
P
supply current
10
16
23
mA
V
iIF(rms)
input sensitivity (RMS value)
−
3 dB before limiting 14
22
35
µ
V
S/N = 26 dB
−
10
−
µ
V
S/N = 46 dB
−
55
−
µ
V
V
oAF(rms)
AF output voltage (RMS value)
60
67
75
mV
THD
total harmonic distortion with double
resonant circuits
−
0.02
−
%
S/N
signal-to-noise ratio
V
i
> 1 mV
−
72
−
dB
α
AM
AM suppression
−
50
−
dB
RR
ripple rejection
f = 100 Hz
43
48
−
dB
I
15
maximum indicator output current
−
−
2
mA
T
amb
operating ambient temperature
−
30
−
+80
°
C
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA1576T
SO20
plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
